Article · Wikipedia archive · Last revised Jun 29, 2026

Trailer connector

A trailer connector is a multi-pole electrical connector between a towing vehicle and a trailer. It is intended primarily to supply automotive lighting on the trailer, but it also provides management and supply to other loads. The connector offers feedback from the trailer to the towing vehicle, ranging from a fault indication for ABS brakes to advanced command, monitor and control using CAN bus for EBS brakes. ISO standards are available.

Last revised
Jun 29, 2026
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An Australian 7-pin trailer connector, viewed from beneath the vehicle. source ↗

A trailer connector (also referred to as a "trailer wire," "trailer cable," or "trailer connecting cable"1) is a multi-pole electrical connector between a towing vehicle (car, truck) and a trailer. It is intended primarily to supply automotive lighting on the trailer, but it also provides management and supply to other loads. The connector offers feedback from the trailer to the towing vehicle, ranging from a fault indication for ABS brakes to advanced command, monitor and control using CAN bus for EBS brakes. ISO standards are available.

Variants

References

References

  1. "Trailer Cable". Maney Wire & Cable. Retrieved 2024-11-07.
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